Harry c



(No Model.)

H. G. CAMPBELL.

- VAPOR STOVE.

Patented May 24,1898.

F W e .zlllllll WITNESSES: 9 OM UNITED STATES PATENT OFFICEQ HARRY O.CAMPBELL, OF LEET, PENNSYLVANIA, ASSIGNOR TO THE STANDARD OIL COMPANY OFNEW YORK, OF NEW YORK, N. Y.

VAPOR-STOVE.

SPECIFICATION forming part Of Letters Patent N0. 604,366, dated May. 24,1898.

Application filed October 14, 1897. Serial No. 655,108. (No model.)

' To all whom it may concern:

Be it known that I, HARRY O. CAMPBELL, 1

a citizen of the United States, residing in Leet township, Alleghenycounty, State of Pennsylvania, have invented a certain new and usefulImprovement in Vapor-Stoves, of

hydrocarbon for fuel which is converted into vapor at the burners byinsuring the extinguishment of the flames as a condition precedent tothe refilling of the tank or reservoir with gasolene.

In carrying out my invention I apply to the ordinary stationary tank orreservoir mounted upon the stand-pipe of the stove or otherwise asuction-plunger and check-valve so arranged and so connected withassociated parts that the filling of the tank will necessarily bepreceded by an upward movement of the plunger, which will draw thegasolene upwardly in the stand-pipe and away from the burnerssufficiently to extinguish the flames. The plunger for this purpose islocated in a cylinder connected with the standpipe and is itselfconnected with some movable part the movement of which is necessary as acondition precedent to the filling of the tank. I prefer to employ afilling can or reservoir within the tank which, similar to the reservoirin a student-lamp, has a checkvalve in its bottom, through which it isfilled, which check-valve is opened by a suitable projection when theinside reservoir is inserted in the tank. The tank is provided in itsbottom with a cylinder, which is a continuation of the stand-pipe, and aplunger with a check-valve is carried by a tubular extension from thelower end of the reservoir. This plunger works in the cylinder in thebottom of the tank and when in the normal position of rest has itscheck-valve opened by the striking of a stemcarrying said valve on aperforated plate at the bottom of the cylinder. This same stem extendsthrough the tubular support and operates the check-valve in the bottomof the reservoir. By this arrangement the withdrawal of the reservoirfrom the tank acts first to close bot-h checkvalves and afterward tocause the plunger to exert a suction in' the cylinder sufficient to'draw the gasolene up in the stand-pipe and extinguish the flames at theburners; In the accompanying drawings, forming part hereof, Figurel is acentral vertical section of a tank for a vapor-stove embodying myimprovement and showing the parts in position to open the check-valves;and Fig.

2 is a sectional view,on a larger scale,through and connected with thecylinder 0 by the coupling 0.

In the bottom of the reservoir Bis screwed a filling-plug E, having a.check-valve F. This is the usual device heretofore employed, and hasbeen arranged to operate in conjunction with a projection on the bottomof the tank, which opened the check-valve when the reservoir wasinserted in the tank. Connected with the filling-plug E, and preferablyin one piece therewith, is a downward tubular extension G, havinglateral openings e and carrying at its lower end a plunger H, providedwith a leather washer h or other suitable device for making asuction-tight fit with the interior surface of the cylinder 0. Theplunger H has an open center formed to seat a checkvalve I, which worksin a yoke 2' above the plunger. A stem K is secured to the checkvalve Iand extends upwardly therefrom through the extension G, striking at itsupper end the check-valve FL The stem K also extends below thecheck-valve I and below the Voir B through the openings 6 and fills the,lower end of the tank A and the cylinder 0,

from which it runs into the stand-pipe D and to the burners.

When it is desired to renew the supply of gasolene in the reservoir, thecover a is opened and the reservoir is lifted out of the tank by itshandle I). The first effect of the upward movement is to close the.check-valves F I, thus preventing the escape of anymore gasolene fromthe reservoir and also closing the opening through the plunger. Thefurther upward movement causes the plunger to produce a suction in thecylinder 0, which draws up the gasolene in the stand-pipe, withdrawingit from the burners, with which the stand pipe is connected, andextinguishing the flames. After the reservoir is removed from the tankit is filled in the usual way through the opening in its bottom by theunscrewing of the filling-plug E. It will thus be seen that theextinguishment of the flames is accomplished automatically by thewithdrawal of the reservoir from the tank, which operation must beperformed before the supply of gasolene in the reservoir can be renewedor before the reservoir can be removed from the tank for any purpose.

In returning the parts to their normal positions the check-valve I willbe elevated and will prevent the imposition of an objectionprovided withan upwardly-opening check valve working in said cylinder and acting towithdraw the gasolene from the stand-pipe, means for holding saidcheck-valve positively open in its lowered position, and a connectionbetween said plunger and a part which is moved as a condition precedentto the filling of the tank, substantially as set forth.

2. In vapor-stoves, the combination witha stand-pipe and tank, of acylinder connected with the stand-pipe andtank, a plunger provided withan upwardly-opening checkvalve working in said cylinder and acting towithdraw the gasolene from the stand-pipe,

a coupling at the lower end of said cylinder with which the stem of saidcheck-valve engages whereby the check-valv'e will be maintainedpositively opened in its lowered position, and a connection between saidplunger and a part which is moved as a condition precedent to thefilling of the tank, substantially as set forth.

3. In vapor-stoves, the combination with a stand-pipe and tank, of areservoir or can within the tank, a plunger connected to said reservoiror can and acting by its'movement to withdraw the gasolene from thestand-pipe and carried by said interior reservoir, whereby thewithdrawal of the reservoir from the tank will cause the plunger towithdraw gasolene from the stand-pipe and extinguish the flame at theburner, an upwardly-opening check-valvefor opening a passage through theplunger when the parts are in the normal condition of rest, and meansfor holding said check-valve positively open in its lowered position,substantially as set forth.

. 4. In vapor-stoves, the combination with a stand pipe and tank, of acylinder between the stand-pipe and tank, a reservoir or can within thetank, a check-valve in the bottom of the reservoir, a plunger andcheck-valve carried by the interior reservoir and moving in saidcylinder, and means for opening both check-valves when the reservoir isinserted in the tank, substantially as set forth.

5. In vapor-stoves, the combination with a stand-pipe and tank, of acylinder between the stand-pipe and tank, a reservoir or can within thetank having a filling-plug with a check-valve, in its bottom, anextension from said filling-plug carrying a plunger and checkvalve atits lower end working in said cylinder, and a valve-stem for openingboth checkvalves which strikes an obstruction at the lower end of saidcylinder and opens the check valves when the interior reservoir reachesits position of rest in the tank, substantially as set forth.

This specification signed and witnessed this 9th day of October, 1897.

HARRY C. CAMPBELL.

Witnesses:

EUGENE CoNRAN, J NO. R. TAYLOR.

